The IPv4 address pool officially ran out in 2011. Today, renting an IPv4 address costs tens of times more than IPv6. IPv6 proxies exploit that cost gap: they offer millions of addresses for a token price. So why isn't everyone moving to IPv6? The answer is one word: support.
The Scale of the Address Space
A single /64 block is billions of times larger than the entire IPv4 space. That is where the low cost of IPv6 proxies comes from.
Core Comparison
The last row is critical: on IPv6, when one address is blocked the whole /64 block is usually blocked with it. The "I have millions of addresses" advantage melts away right there.
When Is IPv6 Actually Useful?
An IPv6 proxy makes sense only if the target site is reachable over IPv6. Google, Facebook, sites behind Cloudflare and the large CDNs all serve IPv6. However, many e-commerce sites and corporate applications in Turkey are still IPv4-only.
If the answer to the first question is "no", there is no need to look at the others: the connection will never be established.
Subnet Logic
When you buy an IPv6 proxy, you are not given individual addresses but a block . The most common allocations:
Blocks are usually applied at the /64 level. For real diversity you need addresses from different /64s — that is, a /48 allocation.
Hybrid Setup
A practical strategy: a cheap IPv6 pool for targets that support IPv6, and a limited number of IPv4 addresses for the rest. A simple routing rule in your client that checks the target's AAAA record and picks the pool accordingly lowers costs noticeably.
A word of caution when testing: if your computer has no IPv6 connectivity, you cannot reachthe IPv6 proxy. First confirm whether your own connection supports IPv6 — My IP Address page shows the format of your exit address.
For details of the IPv6 packages, see our IPv6 proxy page; for address testing, see the Proxy Check tool; the tool also recognizes the bracketed [2001:db8::1]:1080 format.